Add leetcode problem solution for 189

[mahek0620]

Is there an existing issue for this?

• I have searched the existing issues

Issue Description

Rotate Array solution

Suggested Change

.

Rationale

No response

Urgency

High

Record

• I have read the Contributing Guidelines
• I'm a GSSOC'24 contributor
• I have starred the repository

[github-actions]

Hello @mahek0620! Your issue #823 has been closed. Thank you for your contribution!